Smoked Mackerel & Jammy Egg Avocado Sourdough Toast

Instructions

1. 1

   Bring a small saucepan of water to a rolling boil. Lower the cold egg in with a slotted spoon and time exactly 6 minutes 30 seconds. Transfer immediately to a bowl of ice water and chill 5 minutes, then peel and halve lengthways.

2. 2

   Toast the sourdough until deep golden — 3 to 4 minutes in a toaster, or 2 minutes per side in a dry skillet.

3. 3

   Mash the avocado roughly in a small bowl with the lemon juice and a third of the black pepper — leave it chunky, not pureed.

4. 4

   Stir the Greek yogurt with the lemon zest and half the chopped dill in another small bowl.

5. 5